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Unraveling the mysterious life of George Masa, a Japanese immigrant whose photographs helped define the identity of the Great Smoky Mountains.

A Cuban family adjusts to life in the United States.

April Fair in Seville, Spain; Bastille Day in Paris; running with the bulls in Pamplona, Spain; Munich's Oktoberfest; a traditional family Christmas; Nuremberg, Germany's holiday market; sledding by torchlight in Switzerland.

When Binky's family adopts a baby girl from China, Binky worries about how his life will change and if his new sister will like him.

Olive and Otto are zapped into a comic book.

Martin and Chris uncover a plot by Donita Donata to capture sea horses to make living jewelry.

The Hunters head to a nearby mountain to learn about snow.

Lyla and Ale make an escape-proof container for her pet tarantula; rain keeps the kids inside, so they recreate park activities indoors.

Lotta is frustrated learning a new dance, but realizes it is ok to experience music in her own way; Sheldon worries about telling Carl that he doesn't want to play pirates anymore.

Daniel's rushing to go on a boat ride causes him to break his toy boat.

Phoebe and Jay are asked to bird sit; photo time leads Jay to an outfit disaster.

Big Bird is meeting Snuffy at Hooper's for lunch, and everyone decides to surprise him with a Snuffy-sized sandwich named after him, the Snuffwich.

Mr. E learns a dance for Friendship Day; Super, the Wombats and the Boo Boo Blimp to the rescue when the power goes out for the Friendship Daylight Show.

Donkey tries to act like a bird at Duck Duck's bird party, but she does not enjoy herself; Grampy and Donkey miss Gregory while he is away at camp.

Rosie and Javi's pirate adventure goes awry; Rosie has trouble choosing a job at the first Fun Club meeting.

Elinor, Olive and Ari disagree about the best way to build a couch cushion castle; when Ari misplaces the group's favorite ball, they discover that he needs a system for keeping track of his things.

Alma is consumed with her starring role in a musical; Alma and Harper have a playdate at the Rivera house.

Molly finds a lost baby beluga and tries to reunite it with its mother; Molly and Grandpa Nat try to retrieve Molly's fishing hat after it floats away.

James Braidwood explains to Brad that being prepared can help him stay calm when he is feeling nervous; Xavier and Yadina learn that being responsible can involve making hard choices.

Onsite extraction of fossils of an ichthyosaur, a fish lizard that ruled during the time of the dinosaurs, and a 3-D reconstruction of the creature; host David Attenborough.

Richard installs a whole house water filtration system; Tom walks Kevin through various types of woods; Ross visits a hotel room that's powered by voice activation; Jenn Nawada installs a bluestone patio with a reclaimed granite fire pit.

The latest news from health journals and research institutions.

Medical experts on pediatrics, primary care, spine and back pain, pharmacy and emergency medicine are available to answer questions.

Scientists, patients, and families reveal how the brain adapts to trauma, disease, and challenges.

A detailed look into news stories from around the world from the BBC news desk in Washington, D.C.

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

Coverage from Washington, D.C. and London, with a regular panel of guests from across the political spectrum discussing the biggest stories of the day.

Chef Michelle Bernstein hears diner's reviews of restaurants.

Finds include a 1961 JFK Santa Claus Letter, a 1979 Ed Ruscha Stage Fright ink on paper and a John Juzek violin circa 1950.

Palm Beach County teens create a film addressing issues important to them.

Profiles three female Japanese artists who are in various stages of their lives and careers.

Filmmaker Vicky Du traces her family's mental illness back to the Chinese Communist Revolution of 1949.

Christiane Amanpour leads discussions about world issues and interviews with global leaders.